/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/BaseTools/MultiSelectionMeshEditingTool.h
Helper to find which targets share source data. RequiresUAssetBackedTargetas a tool target requirement.
Array of indices, 1:1 with Targets, indicating the first index where a component target sharing the same source data appeared.
bool GetMapToSharedSourceData ( [TArray](API\Runtime\Core\Containers\TArray)< int32 > & MapToFirstOccurrences )